Kotlin Multiplatform Academy · Lesson

Handle User Intents & Actions

Drive state changes from UI events.

The UI Asks, You Decide

When a user taps a button, the UI should not run logic itself. It sends an intent to the ViewModel, which decides what happens.

Model each possible user action as a sealed class. Now every intent the screen can fire is named, typed and impossible to misspell.

sealed class HomeIntent {
    object Refresh : HomeIntent()
    data class Search(val q: String) : HomeIntent()
}